docstr: Sends the specified tensor to the destination dst.
docstr_tok: ["Sends","the","specified","tensor","to","the","destination","dst","."]
code: def send(self, tensor, dst):
      """Sends the specified tensor to the destination dst."""
      self.mailbox[dst].put((self.rank, tensor.clone()))
  
imports: import logging
  import threading
  from operator import itemgetter
  from queue import Queue
  import torch
  from torch.distributed import ReduceOp
  from .communicator import Communicator
label_desc: Use image node_id 5 for calling the InProcessCommunicator obj's underlying member method code with example usage: obj.send(tensor, dst) without return types